Keep your electrical system ticking along smoothly during faults with this RCCB from ABB. As a selective device, it only shuts down the part of your system experiencing current leakage, so the rest of your kit can get on with business as usual. Leakage build-up is no problem for the unit, which breaks the circuit when there's 100mA of residual current and cuts off leaks before they become dangerous. Downtime is kept to a minimum, as this device resets in a snap with a front-facing switch. With its four poles, this versatile breaker is a safe bet for protecting several components at once.

• Handy test button checks for speedy performance checks
• Compact unit measures just 70 (W) x 85 (H) x 69mm (D), so it's an easy fit for busy rails
• Typical power loss of 4.4W per pole, helping to minimise energy use

• Lighting systems
• Renewable energy industry
• Automotive workshops

This unit has a lifespan of 10,000 electrical cycles, so you can trust it to deliver long-lasting circuit protection.